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Brock Ram Sethi
Asked: 2022-11-10T05:52:04+05:30 In:

On dissolving moderate amount of sodium metal in liquid ammonia at low temperature, which of the following does not occur ?
A. Blue coloured solution is obtained
B. `Na^(+)` ions are formed in the solution
C. Liquid `NH_(3)` becomes good conductor of electricity
D. Liquid ammonia remains diamagnetic

On dissolving moderate amount of sodium metal in liquid ammonia at low temperature, which of the following does not occur ?
A. Blue coloured solution is obtained
B. `Na^(+)` ions are formed in the solution
C. Liquid `NH_(3)` becomes good conductor of electricity
D. Liquid ammonia remains diamagnetic
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  1. Correct Answer – D
    Due to free electron liquid ammonia becomes paramagnetic.

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Poonam Sharad Dada
Asked: 2022-11-01T17:34:24+05:30 In:

On dissolving moderate amount of sodium metal in liquid ammonia at low temperature, which of the following does not occur ?
A. Blue-colured solution is obtained
B. Ammoniated `Na^(o+)` ions are formed in solution
C. Liquid ammonia becomes good conductor of electricity
D. The liquid ammonia remains diamagnetic

On dissolving moderate amount of sodium metal in liquid ammonia at low temperature, which of the following does not occur ?
A. Blue-colured solution is obtained
B. Ammoniated `Na^(o+)` ions are formed in solution
C. Liquid ammonia becomes good conductor of electricity
D. The liquid ammonia remains diamagnetic
Parabola
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  1. Correct Answer – D

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Madhu Jobin Rau
Asked: 2022-10-30T09:57:42+05:30 In:

On dissolving moderate amount of sodium metal in liquid ammonia at low temperature, which of the following does not occur ?
A. Blue coloured solution is obtained
B. `Na^(+)` ions are formed in the solution
C. Liquid `NH_(3)` solution becomes good conductor of electricity
D. Liquid `NH_(3)` solution remains diamagnetic

On dissolving moderate amount of sodium metal in liquid ammonia at low temperature, which of the following does not occur ?
A. Blue coloured solution is obtained
B. `Na^(+)` ions are formed in the solution
C. Liquid `NH_(3)` solution becomes good conductor of electricity
D. Liquid `NH_(3)` solution remains diamagnetic
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  1. Correct Answer – D
    The alkali metals dissolve in liquid ammonia giving deep blue solution which are conducting in nature.

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Kabeer Soman
Asked: 2022-10-30T02:50:17+05:30 In:

On dissolving moderate amount of sodium metal in liquid ammonia at low temperature, which of the following does not occur ?
A. Blue colored solution is not obtained.
B. `Na^(+)` ions are formed in the solution.
C. Liquid `NH_(3)` remains diamagnetic.
D. Liquid `NH_(3)` becomoes a good conductor of electricity.

On dissolving moderate amount of sodium metal in liquid ammonia at low temperature, which of the following does not occur ?
A. Blue colored solution is not obtained.
B. `Na^(+)` ions are formed in the solution.
C. Liquid `NH_(3)` remains diamagnetic.
D. Liquid `NH_(3)` becomoes a good conductor of electricity.
Parabola
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1 Answer

  1. Correct Answer – C
    Solution of Na metal in liquid `NH_(3)` consists of solvated `Na^(+)` ions solvated electrons. Due to the presence of solvated electrons, liquid `NH_(3)` is no longer diamagnetic. If becomes paramagnetic:
    `Na+(x+y)NH_(3)rarrNa^(+)(NH_(3))+e^(-)(NH_(3))_(y)`.

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